Code formatting changes only.

* subversion/libsvn_subr/auth.c
  (svn_auth_first_credentials): Balance braces.
  (svn_auth_next_credentials, svn_auth_save_credentials): Fix
    space-before-parent instances.


git-svn-id: https://svn.apache.org/repos/asf/subversion/trunk@1486094 13f79535-47bb-0310-9956-ffa450edef68